misc pkgs: Manual fixup pkgconfig nativeBuildInputs after sed

Importantly, this included regenerating pkgs/servers/x11/xorg, to
clobber the old sed.

pkgs/development/python-modules/Cython/default.nix

@@ -30,11 +30,12 @@ buildPythonPackage rec {
       tests/run/cpdef_enums.pyx
   '';
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [
+    pkgconfig
+    # For testing
+    numpy ncurses
+  ];
   buildInputs = [ glibcLocales gdb ];
-  # For testing
-  nativeBuildInputs = [ numpy ncurses ];
-
   LC_ALL = "en_US.UTF-8";
 
   # cython's testsuite is not working very well with libc++
@@ -55,4 +56,4 @@ buildPythonPackage rec {
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ fridh ];
   };
-}
+}